For the astronomical telescope, the foca...

For the astronomical telescope, the focal length of objective lens is `f_0` and the eye piece lens is `f_e`. Then the tube length of the telescope is _____.

A

`Lgef_0-f_e`

B

`Lgef_0+f_e`

C

`Lltf_0+f_e`

D

`Llef_0-f_e`

Verified by Experts

The correct Answer is:

B

For astronomical telescope
`abs(v_1)=f_0`
`abs(u_2)lef_e`
Probable answer would be (C) conceptually correct.

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